Answer:
The correct answer would be option A. four long needles zero short needles.
Explanation:
The punnet square shows that the parent's genotypes are LL (homozygous dominant) and Ll (heterozygous dominant) which means both parents are long needles as L shows dominance over l that is long needles over short needles.
The punnet square shows that after the cross two offspring's genotypeS is homozygous dominant (LL) while the other two have heterozygous dominant (Ll). So, the phenotype will be four long zero short that is all offspring will have long needles.
Thus, the correct answer is option A.
